Aside

Contact Info ————————————

Technical Skills

Analytical Skills

- Statistical Modeling and Inference
- Predictive Modeling with Modern
  ML Methods
- Non-parametric Methods
- Evaluation of Estimators and
  Bootstrapping
- Bias-Variance Decomposition
  and Model Calibration

Data Science Skills

- Static Flexdashboards
- Interactive ShinyApps
- ggplot and plotly Visualizations
- Efficient Pipelines From
  Source Data to Data Products
- Big Claims and Insurance Data
- Strong RX, CPT, Diagnosis,
  E/M Codes Understanding
- Claims Timeline Recreation and
  Event Ordering Ability From
  Data Records

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Last updated on 05/22/2023

Main

Denis Ostroushko

Education

University of Minnesota

MS Biostatistics 3.867 GPA

Minneapolis, MN

Expected 2024 - 2022

University of Minnesota - Morris

BA Mathematics, Statistics 3.43 GPA

Morris, MN

2019 - 2015

Selected Experience

Healthcare Analyst II

Medica

Minneapolis, MN

Present - 2021

  • Collaborated with business owners to evaluate and improve programs assisting members. Used statistical models and simulations to understand variance of cost savings estimates. Collaboratively developed a strategy to generate additional $1,000,000 annualized savings.
  • Translated actuarial completion factors from spreadsheets to SAS code for automation purposes. Reduced delivery time of monthly completion factors from a few days to a few hours. Implemented a more granular way to estimate these factors, resulting in 35% prediction error reduction.
  • Collaborated with member identification team to develop a predictive model for members at risk of a 30-day hospital readmission. Collectively improved AUC score from 0.72 to 0.79.

Healthcare Analyst I

Medica

Minneapolis, MN

2021 - 2019

  • Refactored legacy SAS and SQL pipeline for monthly large data set processing. Reduced total tun time by 60%. Introduced QA checks.
  • Produced static and interactive dashboards to visualize and summarize healthcare cost and utilization data for physician services and nursing teams. Automated reports saved 10 hours of manual editing each month.
  • Lead the effort to introduce metrics from Milliman proprietary software. New metrics were used for cost savings opportunity identification and lead to more active business units engagement.

Research Assistant

Truckers & Turnover Research Project

Morris, MN

2019 - 2018

  • Managed scripts to produce publication materials. Presented results of medical cost analysis for truck drivers with OSA as a poster. Helped develop a bootstrap simulation to estimate variance of cost difference.